Although you cannot
create or join clusters or administer cluster specific settings from the GUI
(the equivalent of the
clusterconfig command), you can browse machines in
the cluster, create, delete, copy, and move settings among the cluster, groups,
and machines (that is, perform the equivalent of the
clusterset commands) from within the GUI.
The Incoming Mail
Overview page is an example of a command that is restricted to the login host,
because the Mail Flow Monitoring data you are viewing is stored on the local
machine. To view the Incoming Mail Overview reports for another machine, you
must log into the GUI for that machine.
Note the URL in the
browser’s address field when clustering has been enabled on an appliance. The
URL will contain the word
machine , group , or
cluster as appropriate. For example, when you
first log in, the URL of the Incoming Mail Overview page will appear as:
Mail Overview and Incoming Mail Details pages on the Monitor menu are
restricted to the login machine.
The Mail Policies,
Security Services, Network, and System Administration tabs contain pages that
are not restricted to the local machine. If you click the Mail Policies tab,
the centralized management information in the GUI changes.
Figure 2. Centralized
Management Feature in the GUI: No Settings Defined
In the above figure,
the machine is inheriting all of its configuration settings for the current
feature from the cluster mode. The settings being inherited in a light grey
(preview).You can retain these settings or change them, overriding the cluster
level settings for this machine.
settings (preview display) will always show the settings inherited from the
cluster. Use caution when enabling or disabling dependent services among group
and cluster levels. For more information, see
Copying and Moving Settings.
If you click the
Override Settings link, you are taken to a new page for that feature. This page
allows you to create new configuration settings for machine mode. You may begin
with the default settings, or, if you’ve already configured settings in another
mode, you can copy those settings to this machine.
Figure 3. Centralized
Management Feature in the GUI: Create New Settings
Management Feature in the GUI: No Settings Defined, you can also navigate
to modes where this configuration setting is already defined. The modes are
listed in the lower half of the centralized management box, under “Settings for
this feature are currently defined at:”. Only those modes where the settings
are actually defined will be listed here. When you view a page for settings
that are defined in (and inherited from) another mode, the page will display
those settings for you.
If you click on one
of the listed modes (for example, the Cluster: Americas link as shown in
Management Feature in the GUI: No Settings Defined), you will be taken to a
new page that allows you to view and manage the settings for that mode.
Figure 4. Centralized
Management Feature in GUI: Settings Defined
When settings are
defined for a given mode, the centralized management box is displayed on every
page in a minimized state. Click the “Centralized Management Options” link to
expand the box to show a list of options available for the current mode with
respect to the current page. Clicking the “Manage Settings” button allows you
to copy or move the current settings to a different mode or to delete those
For example, in the
following figure, the Centralized Management Options link has been clicked to
present the available options.
Figure 5. Centralized
Management Feature in GUI: Manage Settings
On the right side of
the box is the “Change Mode” menu. This menu displays your current mode and
provides the ability to navigate to any other mode (cluster, group, or machine)
at any time.
Figure 6. The Change Mode
When you navigate to
a page that represents a different mode, the “Mode —” text on the left side of
the centralized management box will flash yellow, briefly, to alert you that
your mode has changed.
Some pages within
certain tabs are restricted to machine mode. However, unlike the Incoming Mail
Overview page (which is restricted to the current login host), these pages can
be used for any machine in the cluster.
Figure 7. Centralized
Management Feature: Machine Restricted
Choose which machine
to administer from the Change Mode menu. You will see a brief flashing of the
text to remind you that you have changed modes.